lolzersize

When one laughs with enough force to induce sweat, tears, urine or physical pain.

Holy shit i just lolzersized so hard my pants are wet.

Metallica (adj.)

To transition one's hairdo from a state of awesomeness to a state of complete douchiness.

Dude, please don't Metallica (adj.) your hair. You're gonna go from looking like Dave Mustaine to looking like fucking Ryan Seacrest